121 open source boards using the 74LS00
Real designs built with the 74LS00, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Instruction
jes
237.5 × 102.9 mm110 parts2LUnlicense301
SCOPETREX
schlae
177.8 × 127 mm197 parts2LNo license245
Raspberry PiApple2-IO-RPi
tjboldt
89.5 × 77.5 mm24 parts2LMIT138
68000
jefftranter
134.6 × 208.3 mm90 parts2LNo license132
Sch
DownUnderCTF
150 × 110 mm47 parts4LNo license115
AVR/ArduinoTTY
KALTCHUK
99.7 × 69.9 mm43 parts2LNo license94
Vic2020mainboard
danwerner21
357.8 × 124.5 mm127 parts2LNo license78
CGA Redux
hkzlab
337.6 × 105.7 mm168 parts4LCC-BY-NC-4.056
TI99 22
350 × 224.3 mm242 parts2LNo license50
80ColumnCard
btb
155.2 × 78.6 mm47 parts2LApache-2.042
Zx2022
michalin
100 × 100 mm34 parts2LGPL-3.041
St251n 20603
137.4 × 199.1 mm277 parts4LNo license38
Tandy1000ex hx ram
misterblack1
57.2 × 84.5 mm17 parts2LNo license36
Dragon64
333.2 × 205.9 mm220 parts2LNo license34
Retroii
jonthomasson
330.2 × 215.9 mm295 parts4LNo license33
Sg1000
barbeque
162.2 × 134.6 mm71 parts2LCC-BY-NC-4.033
Ttl clock
skiselev
100 × 100 mm60 parts2LGPL-3.028
Apple-II-R0
reifsnyderb
215.5 × 361.2 mm189 parts2LNo license26
C128-mmu-256k exp
ytmytm
48.3 × 90.2 mm12 parts2LMIT26
Plusd
alvaroalea
99.1 × 99.1 mm58 parts2LNo license24- schematic only · 32 parts
Digicard-D-Net
markadev
32 parts2LNo license23 
ZX-Spectrum-Issue-4B
iansbremner
213.4 × 130.8 mm199 parts2LNo license22- schematic only · 89 parts
Proton Turbo XT
89 partsNo license22 
Fennec6800
ChartreuseK
218 × 131.9 mm113 parts2LBSD-3-Clause20
ALU1 - 副本
Left-Hand
99.7 × 99.7 mm73 parts2LNo license19
Odyssey 2 rgb
abzman
83.3 × 78.2 mm70 parts2LUnlicense19
Coleco original
sparkletron
168.4 × 214 mm218 parts2LMIT16
TurboXT Addon
74.3 × 43.8 mm28 parts2LCC-BY-NC-4.015
AmigaSID
call286
130.1 × 67.5 mm43 parts2LNo license14
AVR/ArduinoFM-7 SD
yanataka60
100 × 100 mm17 parts2LMIT14
Front panel 9602
ibm2030
283 × 96 mm157 parts2LNo license13
Junior interface
laurent-fr
217.2 × 113 mm116 parts2LCC-BY-NC-4.013
Intellivision t card
143 × 174.7 mm75 parts2LUnlicense12
Coco9511pak
barberd
98.3 × 107.1 mm43 parts2LGPL-3.012
Main
ceteras
299.2 × 180 mm352 parts2LMIT11
SAP-Plus Memory Loader
TomNisbet
150 × 100 mm57 parts2LMIT10
The 74LS00 in open source designs
The gallery holds 121 open source boards using the 74LS00 from 79 GitHub repositories; a typical one measures about 137.4 × 100 mm and carries around 53 components.
88% are two-layer designs, the rest use four layers or more, and 36% carry an open source license.
The most starred is Instruction by jes.
Parts used alongside the 74LS00
Microcontrollers on boards using the 74LS00
What boards using the 74LS00 are built for
74LS00: common questions
Where can I find a 74LS00 reference design?
Each of the 121 boards on this page is a real design using the 74LS00. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 74LS00?
The 74LS04, 74LS32, 74LS138, 74LS245 and 74LS74 appear in the most repositories here.
Which microcontrollers do boards using the 74LS00 use?
Most are built on AVR/Arduino (7), RP2040/RP2350 (1), PIC (1) and Raspberry Pi (1).
How big is a typical board using the 74LS00?
The median is 137.4 × 100 mm, and 88% are two-layer designs.
What is the most popular open source board using the 74LS00?
By GitHub stars, Instruction by jes, with 301 stars.
Can I simulate one of these boards using the 74LS00 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.